Ninth in a series: While reactors 1 and 3 at the Fukushima No. 1 nuclear complex suffered core meltdowns, the cooling system for reactor 2 continued to work for three days despite the loss of power following the earthquake and tsunami of March 11, ...

Seventh in a series: While most had focused their attention on the state of reactors 1 and 2 at the Fukushima No. 1 complex as the 2011 nuclear crisis unfolded, Tokyo Electric's equipment restoration team headed to reactor 3 on March 13.

Fourth in a series: Ground Self-Defense Force member Yuichi Sato was on a firetruck heading for the Fukushima No. 1 nuclear plant the day after it had been decimated by the March 11, 2011, tsunami — without being notified what his mission was.

Second in a series: The loss of power supply to secure the reactors at the Fukushima No. 1 plant meant workers had to race against time to contain the crisis in those early hours under dark and dangerous conditions.

First in a series: Four days after the magnitude-9 earthquake and ensuing tsunami struck northeastern Japan on March 11, 2011, Fukushima No. 1 nuclear power plant chief Masao Yoshida was at his wit's end.